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Panasonic PT L501U Projector

Swapped power supply... and same issue... what next?

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Hi fccanova1973

Then the only other part that can cause this would be the Mainboard.

Posted on Apr 21, 2008

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The projector would not turn on and had a flashing red light for the lamp. Knowing it was an older projector when we rented the building I purchased a new bulb for this projector. When I put the new bulb...


PROBLEM :-The power supply of the projector is faulty there is a transistor witch is switch 15 volts for the lamp drive board.

SOLUTION: Remove the upper cover with 6 screws back side of the projector.
remove main board and lamp cover with 7 screws.(show in the picture)
remove upper cover of the power supply and lamp drive unit with 3 screws.
remove power supply unit with 4 screws and 3 connectors and put face down on the table.
now you find the transistor no Q107 and replace with the transistor no 2SB710 is and surface mounted compunent(show in the picture)
fix it all as you open.
power ON the projector and enjoy

(doing very carefully This is a technical job)


good_help_17.jpggood_help_18.jpg

Feb 05, 2011 | Panasonic PT-LB10SVU Multimedia Projector

1 Answer

I have a Panasonic pt-ae900u projector that doesn't project an image. The lamp fires up but no light makes it past the LCD panels, no video or menu graphics, nothing...help would be appreciated


I have the exact same issue with my projector and was wondering if anybody has an idea what the problem/solution could be? Have checked all internal connections, wiring, etc. but nothing is physically wrong with it. Powers on and off with no issues; bulb is working but no light out of the lens. Please help!

Oct 14, 2010 | Panasonic PT-AE900U Multimedia Projector

1 Answer

Problems with Projector Panasonic PT-L501XU after change the lamp


was this bought new or second hand?
There is a "Lamp Time" setting that can be accessd using your remote control, check this setting.
Look on page 40 and after that of your manual about ambient temperature bulb failure.

By powering off or hittign the reset button the bulb should stay on IF the projector is gettign a signal from a device to show an image. If the projector is not hooked up to a device, laptop, TV, etc. the bulb may turn off to save hours of operation.

Dec 21, 2009 | Panasonic PT L501U Multimedia Projector

1 Answer

Panasonic PT-LB10U do not work lamp ok ballast ok issue is with the power suplly that do not send 15v dc to the ballast need to fix the power supply it send 380 v dc to the ballast but do not have the 15 v...


You have to replace the transistor Q107 on the board ETXM519MBGB
this is pnp type but i can't find it on service manual.So if you don't like to make experiments replace the board.

Oct 21, 2009 | Panasonic PT-LB10VU Multimedia Projector

1 Answer

Panasonic PT L501u Replacement Lamp


panasonic projectors , even if the lamp has reached end of life gives u 10 minutes to reset the lamp counter
so when u replace a new lamp, go to options, lamp counter, reset & press stanby button for confirmation!
thats all the unit powers off & when u check the lamp counter , its shows 0
u r done!!!!!!

Jan 22, 2009 | Panasonic PT L501U Multimedia Projector

1 Answer

Panasonic PT-L501U


Hi BEEZELLE

Does the VGA input work ?

If not then the Mainboard is at fault and will need either repair or replacement.

May 11, 2008 | Sony VPL PX31 Multimedia Projector

1 Answer

Panasonic PT L501U Projector


Right , if the indicator light goes from Green to Orange when shutting down , it will be the Powersupply that is giving problems and not the Ballast.

Apr 17, 2008 | Multimedia Projectors

2 Answers

Panasonic PT L501U Projector


Ok , so the lamp is out then.

Before spending the money on a new Ballast.

Switch on the Projector while the top cover is off and check if all your fans are running.

The red light you see glowing on the Mainboard is quite normal.

Apr 17, 2008 | Epson EMP 720 Multimedia Projector

1 Answer

Panasonic PT L501U Projector


Hi there

Have you replaced the lamp ?

If you haven't - take out the lamp and chech for any irregularity on it - i.e. - discolouration , vein like looking marks ( black or white ) and also if the shape of the shaft is off.

If there is no visible damage it might be a faulty Ballast ( lamp's powersupply ) - especially if you cannot get it out of stanby once it has shut down.

Apr 15, 2008 | Multimedia Projectors

1 Answer

Panasonic PT-AX100


Hello

Check the process of Power supply and the outputs. powerup the projector the replace the faulty gear assy or repair the same.

viren

Rave Services India

Jan 04, 2008 | Multimedia Projectors

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